Intermediate. After the death of his father, Rúben Ramírez de la Mesta inherits a detective agency. The agency is hired to uncover the mysteries of the Palacio de Linares in Madrid, where something is going bump in the night. From the reader series Lecturas de Enigma y Misterio, a collection of graded readers set in different places around Spain and Latin America in which mystery takes center stage. Includes an Audio CD of the text.